Semi-infinite plates dragged through granular beds
Semi-infinite plates dragged through granular beds
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DOI：
10.1088/1742-5468/2012/07/p07013
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发表时间：
2012-07
期刊：
影响因子：
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通讯作者：
H. Guo;J. Goldsmith;I. Delacruz;Mingjiang Tao;Y. Luo;S. Koehler
中科院分区：
文献类型：
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作者：
H. Guo;J. Goldsmith;I. Delacruz;Mingjiang Tao;Y. Luo;S. Koehler
我们进行物理实验和二维离散元法（DEM）模拟的半无限板拖动通过颗粒床在低速。板块的位移x在板块前方产生了一个楔形的超载（堆积）。堆积楔的横截面积与xZ成比例，其中Z是浸没深度，并且阻力从其屈服值随xZ增加。我们扩展了经典的库仑土压力理论屈服墙占桩效应，并找到良好的协议与模拟和物理测量。
We perform physical experiments and 2D discrete element method (DEM) simulations of semi-infinite plates dragged through granular beds at low speeds. The plate’s displacement, x, creates a growing surcharge in front of the plate (pile-up) that takes the shape of a wedge. The cross-sectional area of the pile-up wedge is proportional to xZ where Z is the immersion depth and the drag resistance increases from its yielding value with xZ. We extend the classical Coulomb earth pressure theory for yielding walls to account for the piling-up effect and find good agreement with simulations and physical measurements.